Stylographic pen



(NQ Model.)

F- HOLLAND. Stylographiov'Pen.

No. 286,158. Patented Jan. 4, 1881.

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'ArnNr FRANK HOLLAND, OF MANCHESTER, CONNECTICUT.

STYLOGRAPHIC PEN;

Specification forming part. of Letters Patent No. 236,158, dated January4, 1881.

Application led September 2B, 1880. (No model.)

To all whom t 'may concern Be it known that I, FRANK HOLLAND, ofManchester, in the county of Hartford and State of Connecticut, haveinvented certain new and useful Improvements in Stylographic Pens; andIdo hereby declare that the following is a full, clear, and exactdescription thereof, whereby a person skilled in the art can make anduse the same, reference being had to the accompanying drawings, and tothe letters of reference marked thereon.

Like letters in the gures indicate the same parts. I

Myimprovement relates to stylographicpens which are furnished with afountain or reservoir to contain a supply of ink intended to be fedgradually to the point as it is consumed in writing.

My improvement has for its object the prevention of the flowing out ofthe ink, so as to form a drop upon the point, especially when irstcommencing to write, as is the case with stylographic pens now in use,and to furnish a means for controlling the discharge when too free, or,when not sufcientlyfree, from becoming partially dried or clogged in thepoint; also, to provide a means for conveniently tilling the reservoirwith ink without other accessory tools directly from a bottle orinkstand.

ln the accompanying drawings, illustrating my invention, Figure 1 showsa longitudinal section through the center of my improved pen. Fig. 2 isa cross-section on the line c a of Fig. 1. Fig. 3 is a cross-section onthe line b b of Fig. l.

Ais a-hollow cylinder, of rubber, metal, or other suitable material,forming the outer shell or case of the ink-reservoir.

B is the conical point of the pen. This is made in the usual manner, andis furnished with a screw-thread, which screws into the end of the shellor case A.

C is the hollow point with which the writing isdone. Itis furnished withthe yielding pin D, operated by a spring, E, in the usual manner.

F is the inner shell of the inkreservoir. lt is of a cylindrical form,corresponding with the outer shell, A, and within it is the chamberwhich contains the ink. At its lower end it is contracted in the curvedform shown in the drawings, and terminates in the small aperture F,through which the ink flows to the writing-point. The outer side of thecurved portion of F is furnished with one or more longitudinal grooves,G, (shown in section in Fig. 3,) for the passage of air downward betweenthe parts B and F, where they come in Contact.

H is a ring placed between the inner and outer shells, A and F, toseparate them a short distance, so as to leave an annular space aroundthe outside of the ink-chamber between the shells. The ring H isperforated with one or more apertures, H', for the passage ot' air. Thetube F is held in the ring H by friction or by a line screw-thread.

J is a cap, which is furnished with a screwthread, which enters acorresponding thread in the tube F. It also has a projecting flange,

J', which covers and closes the apertures H v when the cap is screweddown upon its seat.. If slightly unscrewed it opens them.

K is a piston or plunger itting in the cylindrical part of the tube F.It is furnished with a hollow thread, in which the screw-shaft L fitsand turns. The screw-shaft L passes through the cap J, in which itturns, and is furnished with a collar, M, resting in a socket in J,which prevents any longitudinal motion. The collar M is held in its seatby the screwplug N, which also serves as a clamp to hold the collar fromturning when it is screwed forcibly down.

The operation of my improved pen is as follows: When it is desired tofill the reservoir with ink the parts F K L J, which are all attachedtogether, are removed frouhthe outer case. The aperture F' is insertedinto theink, and the stem or shaft L is turned, by means of itsprojecting upper end, so as to raise the piston K. This draws up the inkand fills the chamber.v The parts are then replaced in the pen.Whileusing the pen air can be admitted to supply the place of the inkexpended through the apertures Hl by slightly raising the cap J. The airpasses down through the space between the shells A and F and grooves Gr,so as to enter the aperture F. The supply of ink can also be regulatedby the piston K. If the ink flows too ireely, slightly raising thepiston by means of the screw L will relieve it,

or, if clogged, slightly depressing the piston IOO as before described.The point-section can then be replaced, when the pen is ready for use.

VVlmt I claim as my invention is- The combination ofthe shellA, thepoint B, the shell F, with its grooves G, and ring H, with its aperturesH', to form an air-chamber around the ink-reservoir, through which aircan pass to the ink, substantially as described. zo

FRANK HOLLAND.

will start it. The air-chamber between the shells A and F also Serves asa non-conducting medium, to preventthe heating of the air above the inkwithin the chamber F by the warmth of the hand, and thereby forcing,`the contained inl; ont in large drops, as is commonly experienced withthe pens 110W in use.

lt will not ordinarily be necessary to remove the ink-reservoir from theshell A in order to till it. The point-section B can be unserewed, so asto expose the end of the ink-reservoir, which can then be placed in theink and filled,

Witnesses:

THEO. G. ELLIS, GHAs. L. BURDETT.

